package NGUYENNGOCMINH.OOP;

public class Tringle {
	//1. Datafield
	private double side01;
	private double side02;
	private double side03;
	
	//2. Constructors
	public Tringle() {
		side01 = 1.0;
		side02 = 1.0;
		side03 = 1.0;
	}

	public Tringle(double side01, double side02, double side03) {
		this.side01 = side01;
		this.side02 = side02;
		this.side03 = side03;
	}

	//3. Get and Set
	public double getSide01() {
		return side01;
	}

	public void setSide01(double side01) {
		this.side01 = side01;
	}

	public double getSide02() {
		return side02;
	}

	public void setSide02(double side02) {
		this.side02 = side02;
	}

	public double getSide03() {
		return side03;
	}

	public void setSide03(double side03) {
		this.side03 = side03;
	}
	
	//4. Phương thức
	public double Area() {
		double a = (side01 + side02 + side03)/2;
		
		return Math.sqrt(a * (a - side01) * (a - side02) * (a - side03));
	}
}
